You wouldn't guess from the scan, but this postcard is very huge, as the size of two normal cards together. It comes from Ana, from the capital of Serbia - Belgrade. Belgrade is first mentioned under its Slavic name Beli Grad (White City) in written records of the 9th century. The postcards gives us a look from above, showing the Sava river and bridges built over it (there is 9 bridges over Sava in Belgrade in total ).
Great Year of the Snake stamp. Thanks, Ana!